A process for controlling the composition of an xBOB so that the xBOB will yield an oxygenate-containing gasoline which precisely meets desired specifications when mixed with the desired amount of oxygenate. The methods and systems include evaluating a schema graph identifying the join paths between a field X and a field Y, and a value X=x, to identify the top-few values of Y=y that are reachable from a specified X=x value when using the join paths. In another embodiment, the electrodes have opposite conductivity types. The laminate includes an outer or structural layer and a thin inner barrier layer, with the inner layer being in close proximity or in contact with the roasted coffee. The redirection is performed with an inactive gas, which is also used for ventilating the reaction chamber between the vapour-phase pulses. SEE-tolerant configurations are shown and described for combinational logic circuits, state-holding logic circuits and SRAM memory circuits.